Mental preparation for a very long night shift

Sleep, Sleep,  Eat, Sleep and bit more sleep before getting dressed. I'm feeling a bit anxious about this evening purely because I have no idea how I'm going to cope with staying awake all night and  still functioning like a human being. I can barely function during the day. The red bull is out and at the ready should an emergency I'm going to faint moment happens, which I'm told is very common for new students on their first night shifts. I'm eating lots today to make sure that at 3 in the morning my sugars don't plummet and as a result I end up with a whooshing noise in my ears and ending up in an untidy mess on the floor. I'm a bit nervous because this could be the night for my first birth so i want to be awake and fairly alert but who knows. Wish me luck! :)